(19)

(11)

EP 3 520 518 A1

(12)

(43) Date of publication: 07.08.2019 Bulletin 2019/32 (21) Application number: 16917220.2 (22) Date of filing: 29.09.2016

(51) International Patent Classification (IPC):  H04W 72/04(2009.01) (86) International application number: PCT/CN2016/100939 (87) International publication number: WO 2018/058466 (05.04.2018 Gazette 2018/14)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: MA MD (71) Applicant: Nokia Technologies Oy 02610 Espoo (FI)	(72) Inventors: ENESCU, Mihai 02120 Espoo (FI) MIAO, Deshan Beijing 101101 (CN) (74) Representative: Nokia EPO representatives  Nokia Technologies Oy Karaportti 3 02610 Espoo 02610 Espoo (FI)